I found this frame on a rubbish pile and have started the cleanup for restoration, but have no idea who made the frame and would like to match it as close as possible to original. here are some images of what I hope are distinctive Features.http://www.flickr.com/photos/93187308@N06/8472440657/

The distinctive features: Shimano EF drop outs, Dura ace gear lever braze on's and location ofserial number. I'm thinking mid to high range sports bike, 80's Japanese factory built. Forks, with non matching Tange ends might not be original, and race number bracket under the top tube is a bit of a mystery. here's a Kuwahara with similar serial numberCheers

If you're interested just to try to make as many bucks, because you'll never conclusively identify the bike, you'll be trying to attract the collectors, they don't buy anything that can't be definitely identified, so you'll be up against the $100 local frames in the market, so at the end of the day, you'd be lucky to make $100 for it.

Sorry that's life, the truth hurts at times, but it's better that someone tells you now rather than asking a stupid figure (like a certain Mexican bike we saw through this forum recently) & not attracting any interest.

If you want to dispose of it, I would put my hand up at $100, I'd do exactly what I described to you to do, even pretty much have the paint scheme already worked out (yep it involves chrome then paint over the top).

As Cotterpin noted, the Dura Ace shifter bosses give a good clue to the date. Those bosses are proprietary for the 7300 series Dura Ace AX levers. Normal shifters won't fit. The Ax group we ~82-83 I think. Not many Euro frame builders would have built a frame that could only take the shimano aero group. Gitane and Peugeot were exceptions who both did early TT bikes, however this frame is neither of those. Euro builders would probably not have used the Japanese tips either. So keep looking at Kuwa and other Japanese brands in the 82 - 85 period. If you decide to build it with something other than the old AX group, then you need top braze on some normal shift lever bosses. Nice looking frame.

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